..... That Sounds Very Cruel. Im sorry to hear that Happened to you.
Darling, have you heard of the phrase "Go where your celebrated and not tolerated". I have had bad experiences with people who treated me badly, and I just had to let them go. Holding a grudge is like drinking poison, you hope the other person gets hurt but you get hurt. I know its easier said than done. But People who treat you this way are NOT worth your energy and time. Let it Go.
Learn from these bad encounters. You have the choice to determine what it is you want and what you are looking for through them . Dont get bitter, Get Better :) and know that: theres nothing wrong you. Its okay to feel the way you do, and dont beat yourself up for it. You are Stronger than you think!! Be more confident. I spend a lot of time alone, and its okay. Find a distraction, that makes you happy. Theres a difference between being "alone" and solitide. If your lonely when your alone, Your in Bad company. Learn to Love yourself! its okay :)

"When Bad things happen to you, You have 3 Choices.
You either let it Define You, Let it Destory, OR You can Let it Strengthen You"

Look for better days xo

Sorry the teacher didn't like you - better than some teachers today - mistaking the kids in their class for potential "dates". Insanely stupid behavior is on the rise, and worst of all, it's not only tolerated, but often, admired and rewarded. Retail people are some of the most miserable people alive. A customer is someone they want to get the hell away from them. More insanity.

The taco place - did you s-e-e the recent msn photo of some dopey kid holding up as many taco shells as possible, licking them? I'm soooo glad they fired him, but there's a zillion more, just like him.

All you can do is be your interesting, intelligent self, not take it
personally out in the world -- if not you, they're making somebody wish if only e-v-e-r-y-t-h-i-n-g could be bought online.

If someone you were meeting forgets, if they have empathy,
they understand the imposition or slight that you feel and they
make sure that you see their regret.

The comedy with Helen Hunt - her character once mentioned a teacher that did something that made her angry or feel slighted, and then she said, "She was old. She probably died already." lol
===================================================

"Do not get upset with people or situations. Both are powerless
without your reaction." --- easier said than done:

You are not invisible. and I am so sorry if you EVER felt that way. No one should be made to feel that way. I agree with lucillegem about you having to be the one who decides.You automatically think there is something wrong with you, when there isn't. You are the one who decides if you are going to turn lemons into lemonade...wow there are alot of proverbial phrases in this discussion! LOL!
Hell be a b*stard and go to the manager of the store. They sure as heck will notice you then. Take your food back and demand a new order. I am not like that but if I feel like someone is purposely ignoring me I will stand up for myself. There is nothing wrong with that. You don't have to yell or scream, just have a conversation.
Bottom line, I can see you just fine and anyone who can't isn't worth your breath.TTYS!

An average day in the life of every middle-aged woman...

Low paid service jobs are routinely staffed by people who don't really want to be there. Don't take it personally.

welcome johnny....I hear ya...no fun...sorry

ABSOLUTELY CRUEL AND UNCALLED FOR. Sorry I needed to let out a little frustration. Your childhood and into adulthood sounds much like mine. I'll share a story of a teacher that I had. I was terrible in math. My teacher asked me a math question and I didn't know it. So, he came to my desk and put down 10 pennies. He asked me to count them out-loud. I did so and after doing as he asked, in a very very condescending way, he told me I could keep them and he laughed, therefore, the entire class laughed. It didn't end there, it went out into recess. I think for some of your story, kids have become complacent and lazy with their jobs. They don't listen, you are right, and they don't seem to care. It is very sad. Your teacher should have been reported, just as mine should have. I have felt ignored and not important since childhood too. Maybe we went to the same school? Hugs for you... GB

I SEE YOU, Johnny-!

You have to COMMAND attention. When you walk up to a store counter or somewhere you need service, don't assume that they're aware of you. SAY something.

P.S.. I agree with Koolman too...

So sorry that you've felt invisible during your life. Same here, it's painful. One piece of advice that's helped me is thinking about brig the host in these situations that seem that way. Think of how entirely you you probably feel when you have company. Because you allow yourself to because no one else is going to be the host. So think of every time you speak as being the host of your space that you are inviting others into. So many people feel they have to be invited and trying to come in as a host even if its a place you wouldn't normally be feels empowering and gives you permission to be YOU! With all your endearing strengths as well as quirks. :)